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प्रश्न
Complete and balance the following reaction.
Na + H2O →_____________ +___________
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उत्तर
2Na + 2H2O → 2NaOH + H2
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संबंधित प्रश्न
Give reason for the following:
Though hydrogen is lighter than air it cannot be collected by downward displacement of air.
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
Give reason for the following:
Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Lead - Pb + 2NaOH → ______ + _______ [g]
Name an element whsich reacts violently with water at room temperature.
State why hydrogen is not prepared in the laboratory by the action of sodium with cold water.
Give a balanced equation for the following conversion.
\[\ce{ZnO<-H2O->Fe3O4}\]
